#!/usr/bin/env PYTHONHASHSEED=1234 python3

# Copyright 2014-2024 Brett Slatkin, Pearson Education Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from .models import Projectile

__all__ = ["simulate_collision"]

def _dot_product(a, b):
    pass

def simulate_collision(a, b):
    after_a = Projectile(-a.mass, -a.velocity)
    after_b = Projectile(-b.mass, -b.velocity)
    return after_a, after_b
